I think your benchtop material choice really depends on how both you and your husband live and what level of natural wear you are comfortable with showing. Natural wood benchtops to me are very similar to natural stone or stainless steel. The surfaces will naturally age and show use, scratches and imperfections much more than say a caesarstone if it's a high use area but some people love that look and it goes well with an industrial or natural style. My wife and I thought long and hard about it but realised we want the benchtop to look as new and clean each time as possible so opted back for caeserstone (Ocean Foam) which hid small stains and dust :)

I know it's been a while, but I'd love to see some images of the end result!

I'd google restaurants in water front locations like St Kilda, Noosa, Bondi, Port Douglas (or Nantucket, Muskoka or Hamptons) and see who has a look that's similar to what your after. Then we could help with more focussed suggestions. Coastal can have many versions. Have you finalised wall, ceiling and floor finishes?

What material is it and by integrated does that include basin?